Electric heater.



r. 0. PERKINS-8a 'M..M. BUCK.

ELECTRIC HEATER.

APPLIQATIQNI'ILBDDBO. 1, 19 10.

Patented Aug. 6, 1912.

2 SHBETSSHEET 1.

EH. "I

WWW \HIHIHWWW" m muuw' 4 O I v V WITNESSES v INVENTORS PS jaw w ELECTRIC HEATER.

APPLICATION FILED D30: 1, 1910;

Patented Aug. 6,1912.

(imam Z J 5 a" WITNESSES m w H S 5 m F S M m M9 2 A v A 1 .15.. 7 a? a a \6 m 9:? "m .1 i U m? m x .l HInM r J ma it mean ta azlaam am amg I a t elit known that we "FRANK C." Pn uuns ad'lhdAR-I MYRTLE BuoK,:of -B1-1Iitalo and ,Franklinville, in the counties :of' Erie and j ljni provernents' Electric 'Heaters; and we do'hereby' declarethe following to be a full, clear, and exact description of the invention,

towhich itapperta'ins to make u and usethe "Eillhis' invention relates to improvements in ,-el ectr ic' -heaters and more particularly to 'coinffor heatingcurling irons and thelikeone fobject of the invention beingto pro- I'vide- 'simple andefiic'ient means operable by --a coin to clos'e an electric circuit for apredetfrmined' length of time through heating I I further object is toso' construct a comcontjrolled'l'ieater ofthecharacter specified that it'gshallcomprise few parts and so that no part thereof will be liable to-burn out or transmit heat' tothe exterior of the device. Withthese objects in view the invention consists-in certain novel features of -construction and'combinations of parts as here- SOina'fter described and pointed out in the '4 claims. o I r a In the accoihpanyingdrawings, Figure 1 is a face view with the front of the casing removed. Fig. 2'isgagverticalsectional view 1 "showing the mechanism inside elevation.

Fig. 31s a sectional viewtpartly in elevation i showin the opposite side of the mechanism.

1 [Fig.4 Isa horizontal sectionalview; Fig. 5

v v I? is-a diagrammatical view and Fig; 6 is a 40, detailview of one of the core tubes.

7 V 1 represents a; supporting plate, to which i Y a casin'g 2- is secured and which is spaced therefrom by means of posts 3. The casing 2- comprises a back member 4 having perforations for ventilating purposes; an integral.

' topmember 5' and a removable member 6 which constitutes the front, sides and bottom of the casing. p

' -A bracket 7 is secured to the back member 50. 4 and supports-the lower ends of heating I coils 8 the tubular-cores, 8 of which project through-holes in the upper member of said bracket and rest upon the lower member thereof; while the upper ends of said. tuba Specification of te m Eatent. I l

5 Cattaraugus,respectively, and .State of New zyorkphave invented certain-newand useful io fsuch as willienablefothers skilled in the art- 15' 'siichas;arexcontrolledby the operation of a member 5 of the casing.

TA A EN. T OFFICE.

BUFFALO. \AND. MARY MYRTLE BUCK, 0F FRANKLINVILLE, .u. p a EW- YQ RK; SAID PERKINS ASSIGNOB To SAID BUCK.

ELECTRIC HEATER.

' Paten'tedAug. 6,1912.

' {a li ation as December 1, 1910. S eriaI'No. 595,089.

lar cores enter thimbles 9 in the top mem'ber tfiof the casing.v Each tubular core tube 8 1s preferabl made of lavite and-formed ex- .teriorly. wit .a spiral groove 8," in which the heating wire is wound. Witlrsnchconstruction the turns of the heating-coil willf be eifectually insulated from each other, and a core tube is'provided which is simple and (preferably two). heating coilswill belenis ployed so thatthe user can heat two curling irons simultaneously.

7 cheap and which is efiicient forthe purpose It is lntended to perform. A- -plurality To the under'face ofthejtop member 5 of the casing, ablock 10 of porcelainiorr.

other. non-conducting material is. secured and provided with a depending member 11 having an elongated opening 12; there?) through of a sizelapproximately to permit the passage of a'coin, such'as anickeh-said slot or opening communicating at its-upper end with a coin inlet chute 13 on the top 1 1 is located in one side of the slot 12 in A contact finger" the depending member 11 and terminates at its lower end at the lower end of said depending member. This contact finger is electrically connected, through the medium of a pin or projection 15, with a Screw 16 passing transversely through said depending member 11, near the lower end of the latter. The screw 16 also enters a metallic 'arnrl'? securedto the block 10 and disposed parallel with one outer wall of-thedepending member 11. Another metaihearm 1S, spaced fromthe depending member 11, issecured to the under face of the block 10 and depends therefrom. ,One end ofa U-shaped thermostat 19 is secured tdthe depending arm 18 and the opposite member 20 of said thermostat is provided with an arm or projection 21disposed-under the lower end of the'slotted depending member 11 and provided with a tooth or shoulder 22 which is normally disposed under the slot 12 at the side thereof opposite the contact finger. 14. The arm 21 on thethe'rmostat may also be provided with a lip 23.to. limit the movement in one direction of said thermostat and,

insure a proper normal disposition of the tooth or shoulder 22 under one side of the slot 12. The intermediate or connecting portion of the U-shaped thermostat is disposedin .wmparativ'ely close proximity to the heating coils 8 so that it willfbe within the external heating zone of the latter. The heating coils, the thermostat and the contact finger 14 are included in series in a nor latter will be prevented by engagement withthe tooth or shoulder 22 on the arm 21' of" the thermostat. iVhen the coin becomes thus disposed, it will electrically connect the contact finger 1 1 at one side of the slot 12 with the arm 21 of the thermostat and thus a circuit will be closed through the thermostat and the heating coils. The heat from the coils 8 will cause the thermostat to operate in such manner as to move the member 20 and the arm 21 thereon outwardly and when said thermostat shall have been heated sufficiently to move the arm 21 far enough to cause the tooth or shoulder 22 to pass beyond the slot 12, the coin will be free to drop and thereby-open the circuit. It will of course be understood that the thermostat will be so constructed and the tooth or shoulder 22 made of such length as to cause the circuit to be closed and coils to be heated for a predetermined length of time sufiicientto keep the curling irons heated for a proper length of time.

In order to confine the external heat from the coils 8 as much as possible to the thermostat and prevent such heat from reaching other parts of the nuchauism, we provide a slotted shield 25 of asbestos board or similar material.

Having fully described our invention what we claim as new and desire to secure'by Letters-Patent, is,

1. An electric heater comprising an electrical heating element, manually controlled circuit-closing means comprising relatively movable parts separated from each other and adapted to be connected by a movable connecting device, an electric circuit including said circuit-closing means and said heating elcn'lent, a thermostat disposed Within the heating zone of the provided with a movable part carrying one part of the circuit closing means, and adapted by its movements to release said movable COIiliQtFtli'lg' device to open the circuit after rated from heating means and the same has been closed a predetermined length of time.

and-movable therewith, said last-mentioned part constituting another member of said circuit closer and permanently separated from said contact finger, said members of the circuit closer constructed to sustain a movable connector for a predetermined length. of time. 1

3. In a machine of the character de scribed, the combination with a heating coil and abnormally open electric circuit including thesame, of a contact finger constituting one member of 'a circuit closer in said electric circuit, a thermostat having its intermediate portion disposed Within the external heating zone of theheating coil, rigid supporting means for one end of said thermostat-and anarm projecting from one .end of the thermostat and provided with a shoulder constituting another member .of' said circuit closer and permanently sepathe first-mentioned member thereof, said circuit closer member adapted to sustain a movable connector for a predetermined length of time.

1. In a machine of the character de-' scribed, the combination with a heating coil, a normally open electric circuit, including the same, and a contact finger constituting one membcr'of a circuit closer in said electric circuit, of a thermostat having its intermediate portion within the external heating zone of the heating coil, means for rigidly supporting one end of said thermostat, a parton the free end of the thermostat constituting another member of said circuit closer and permanently separated from the first-mentioned member thereof, said circuit closer members adapted to temporarily sustain a movable connection, an electric c rcuit including said contact finger, ther 'ostat and heating coil in series, and aw condenser in shunt between said contact finger and one end of thethermostat. In testimony whereof, we have signed this specification in the presence of two subscribing witnesses.

FRANK C. PERKINSQ MAR-Y MYRTLE BUCK. IVitnesses NnLLm SMITH,

Mrs. P. C. RAUNER.

Copies of this patent may be obtained fox-"five cents each, by addressing the commissioner of Patents.

washiiigton, n. c. 

